Hi,
As per my understanding the error you are encountering is due to the discrete data that is input directly into "derivative" and "integrator" blocks which expect continuously sampled input. To resolve the encountered steps you can refer to the following steps:
- Load the road profile data into Simulink using a "From Workspace" block.
% Save road profile as time series data for Simulink
t = (0:length(hx)-1) * B; % Adjust time based on distance and sampling
road_profile = [t' hx']; % 2-column matrix [time, road profile]
- In your Simulink model, replace the sine wave/step function block with a "From Workspace" block. Set the "Data" parameter of the block to "road_profile" which is the time based representation of the road profile. Set the "Sample Time" to "-1" so that Simulink auto-detects the sample time from the data.
- For blocks like "integrator" and "derivative" that expect continuous data, please check that your data is appropriately sampled. If your road profile "hx" is too coarse, resample it to finer intervals by interpolating the data. Refer to the following code snippet as example.
% Resample road profile to match solver needs
time_fine = linspace(min(t), max(t), finer_sample_points);
hx_fine = interp1(t, hx, time_fine, 'linear'); % Linear interpolation
- Use a variable-step solver like "ode45" or "ode15" and set the step size equal to the sampling rate of your road profile data.
Hope this helps!
